| Technology Archive Reference - D | |
| D2C | Decimal to Character (REXX language function) |
| DCC | Digital Compact Cassette (developed by Philips and Matsushita/Panasonic) |
| DCL | DEC (Digital) Command Language (DEC, Digital Equipment Corp.) |
| DDP | Distributed data processing |
| DECNET | Digital Equipment Corp. Networking |
| DELSTR | Delete String (REXX language function) |
| DMSP | Distributed Mail System Protocol (RFC-984) |
| DOE | Distributed Objects Everywhere (Oracle/Sun, replaced by EJB) |
| DOMAIN | Distributed Operating Multi Access Interactive Network (Apollo, acquired by Hewlett-Packard) |
| DNSO | Defense Network Systems Organization (renamed as DISA) |
| DOS | Disk Operating System |
| DSDD | Double Sided Double Density (storage disks) |
| DSHD | Double Sided High Density (storage disks) |
| DSQD | Double Sided Quad Density (storage disks) |
| DTE | Dumb Terminal Emulator |
| DWP | Daisy Wheel Printer |
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